Dark Blender is the most advanced package for game asset creation available, it automates most of the technical tasks done by game artists to allow the artist to focus on the design of creation.
With it you can generate a base mesh from a drawing, convert your sculpture or hard surface model into a game asset, bake every textures, unfold and optimize the texel density of your model, apply premade gradient effects and much more all in few clicks. Everything is built to generate a good grayscale with a stylized hand painted looks that fit the Dota 2 style.
While other tools require hours of work to finish a game asset, Dark Blender can do most of the tasks in one click - having such speed allow you to go back and tweak your initial high poly model and generate your game asset again by pressing a button.
This project is made for free, the goal is to give the best and fastest tools possible to everyone. You have access to all the sources and can modify it.
Get Dark Blender (itβs free!): http://linko.projects.free.fr/dblender.zip
Official tread (to see the latest features): http://blenderartists.org/forum/showthread.php?383624-Dark-Blender-(Official-Thread)-optimized-for-sculpting-and-game-asset-creation
The latest version also include weather effect, generating a mesh from a drawing in few clicks.